發(fā)布時間：2018-11-27 10:56

【摘要】：通過搭建縮尺模型實驗臺,分析了空氣側(cè)溫度周期動態(tài)變化下地鐵隧道新建到遠(yuǎn)期17a的隧道圍巖土體熱庫變化。根據(jù)圍巖土體溫度場隨時間分布特性,將其分為動態(tài)拓展期和動態(tài)穩(wěn)定期。給出土體溫度隨深度逐年演化特性和熱量蓄放特性,指出該實際地鐵隧道模型中圍巖土體熱庫厚度穩(wěn)定在20m,熱庫峰值穩(wěn)定在22.7℃,熱庫特征厚度穩(wěn)定在2m。為后續(xù)解決遠(yuǎn)期運行區(qū)間隧道溫升過高的問題提供參考。
[Abstract]:By setting up a scale model test bench, the thermal reservoir changes of surrounding rock mass of subway tunnel under the dynamic variation of temperature period in the air side are analyzed during the period of 17 years from the new construction of the subway tunnel to the future 17 years. According to the temperature distribution of surrounding rock and soil with time, it can be divided into dynamic extension period and dynamic stable period. The characteristics of soil temperature evolution with depth and heat storage are given. It is pointed out that the thermal reservoir thickness of surrounding rock is stable at 20 m, the peak value of heat reservoir is 22.7 鈩，

本文編號：2360495